Additional file 1: Figure S1.

Unigene Pairwise Nucleotide Identity Plot. Sequence identity between unigenes considered in this study and reference EST sets (PlantGDB public ESTs, http://www.plantgdb.org/ webcite) for the hosts Z. mays and M. truncatula. Triphysaria unigenes were aligned to the host reference to identify host contaminants and aligned to the reciprocal non-host reference sets to identify the incidental nucleotide pairwise identity. A whole plant normalized transcriptome assembly of Lindenbergia philippensis (a non-parasitic member of the Orobanchaceae) was used to determine the distribution of pairwise identity for a non-parasite to each host and to control for high unigene identity to host ESTs from potential cross contamination. A threshold of 95% was chosen to balance exclusion of host transcripts with retention of Triphysaria unigenes that had incident high identity to host ESTs.

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Honaas et al. BMC Plant Biology 2013 13:9   doi:10.1186/1471-2229-13-9